<template>
  <el-container class="home_container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/img/2.jpg" alt="" />
        <span>电商后台管理平台</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse ? '64px' : '200px'">
        <!-- 侧边栏折叠展开按钮 -->
        <div class="toggle_button" @click="togglecollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#9ce0fe"
          text-color="#000"
          active-text-color="#ffd04b"
          :unique-opened="true"
          :collapse="iscollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单模板 -->
            <template slot="title">
              <!-- 字体图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="subItem.path"
              v-for="subItem of item.children"
              :key="subItem.id"
              @click="saveNavState(subItem.path)"
            >
              <template slot="title">
                <!-- 字体图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template></el-menu-item
            >
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  //生命周期
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("activePath");
  },
  //数据
  data() {
    return {
      //左侧数据
      menulist: "",
      iscollapse: false,
      activePath: "",
      iconsObj: {
        // 一级菜单的icon图标
        147: "el-icon-magic-stick",
        125: "iconfont icon-users",
        103: "iconfont icon-tijikongjian",
        101: "iconfont icon-shangpin",
        102: "iconfont icon-danju",
        145: "iconfont icon-baobiao",
      },
    };
  },
  //方法
  methods: {
    //退出
    logout() {
      //清空token
      window.sessionStorage.clear();
      //路由跳转到登录页面
      this.$router.push("/login");
    },
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status != 200) {
        return this.$message.error(res.meta.msg);
      }
      this.menulist = res.data;
    },
    //点击按钮，切换菜单折叠展开
    togglecollapse() {
      this.iscollapse = !this.iscollapse;
    },
    //保存链接激活状态
    saveNavState(e) {
      window.sessionStorage.setItem("activePath", e);
      this.activePath = e;
    },
  },
};
</script>

<style lang="less" scoped>
.el-header {
  background-color: #3992e0;
  display: flex;
  justify-content: space-between;
  padding-left: 5px;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
  img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
  }
}
.home_container {
  height: 100%;
}
.el-aside {
  background-color: #9ce0fe;
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
}
.toggle_button {
  background-color: #4a5064;
  font-size: 10px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
  line-height: 24px;
}
</style>